Four new species of Pichia (Pichiales, Pichiaceae) isolated from China

By

Guo, Liang-Chen
Hu, Shuang
Zhu, Haiyan
Shang, Yu-Jie
Qiu, Yan-Jie
Wen, Zhang
Chen, Shen-Xi
Bai, Feng-yan
Han, Pei-Jie

Type

Article

Date of Publication

2025

Original Publication

MycoKeys

Volume

114

Pages

115--132

Subjects

new species , Phylogeny , taxonomy , urease activity

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.114.142474

 

Abstract

The genus Pichia belonging to the family Pichiaceae is widely distributed worldwide and has garnered significant attention due to its importance in various industries and its potential role in human infections. During our investigation of yeast diversity in China, several strains representing undescribed taxa were isolated from forests in Hainan province, Hubei province, Beijing city and a mudflat in Guangdong province. Based on phylogenetic analyses of the internal transcribed spacer (ITS) region and the D1/D2 domain of the large subunit (LSU) rRNA, these strains were identified as four new species: Pichia kregerianasp. nov. (holotype strain CGMCC 2.7383T), P. phaffiisp. nov. (holotype strain CGMCC 2.8239T), P. ureolyticasp. nov. (holotype strain CGMCC 2.6825T) and P. wuzhishanensis f.a. sp. nov. (holotype strain CGMCC 2.7381T). The six strains of P. ureolytica were identified as positive for urease production. This phenomenon is extremely rare in the genus Pichia, as only P. bovicola is reported to exhibit weak urease activity.